uTo construct a tangent to a curve through a specified point

1.Draw a curve, such as an ellipse.

2.Tap [Draw], [Construct], and then [Tangent to Curve].

• This highlights K on the toolbar.

3.Tap the point of tangency on the curve. This draws the tangent.

uTo reflect a line segment with respect to a specified line of symmetry

1.Draw a line segment and a line to use as the line of symmetry, and then select the line segment.

2.Tap [Draw], [Construct], and then [Reflection].

• This highlights S on the toolbar.

3.Tap the line of symmetry. This reflects the line segment you drew in step 1 about the line of symmetry.

uTo translate a line segment by inputting a vector

1.Draw a line segment (AB), and then select it.

2.Tap [Draw], [Construct], and then [Translation] to display the Translation dialog box.

3.Enter the vector for the translation.

Vector values indicate the amount of movement in the x-axis direction and in the y-axis direction. In the nearby screen, for example, the figure selected in step 1 moves parallel to the x-axis by three.

4.Tap [OK]. This translates line segment AB in accordance with the vector value you input, and draws line segment A’B’.

uTo translate a line segment by selecting a vector

1.Draw a line segment (AB), and a vector to use in the translation. Next, select the line segment.

2.Tap [Draw], [Construct], and then [Translation] to display the Translation dialog box.

3.Tap [Select Vector].

4.Tap the vector on the screen. This translates line segment AB in accordance with the vector you selected, and draws line segment A’B’.

Chapter 8: Geometry Application

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